diff options
| author | Avi Kivity | 2011-08-01 10:03:42 +0200 |
|---|---|---|
| committer | Avi Kivity | 2011-09-04 16:46:51 +0200 |
| commit | 64c048f4a86d92078970ca5d817fd6411430b6a0 (patch) | |
| tree | a7427f66c8c7d640b7485ae3befa5e31959abc4f | |
| parent | leon3: convert to memory API (diff) | |
| download | qemu-64c048f4a86d92078970ca5d817fd6411430b6a0.tar.gz qemu-64c048f4a86d92078970ca5d817fd6411430b6a0.tar.xz qemu-64c048f4a86d92078970ca5d817fd6411430b6a0.zip | |
cirrus: wrap memory update in a transaction
This prevents spurious unmapping and remapping of the vga windows,
which reduces performance.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | hw/cirrus_vga.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c index 4d0ef0d54c..ec7ea8207b 100644 --- a/hw/cirrus_vga.c +++ b/hw/cirrus_vga.c @@ -2424,6 +2424,7 @@ static void cirrus_update_memory_access(CirrusVGAState *s) { unsigned mode; + memory_region_transaction_begin(); if ((s->vga.sr[0x17] & 0x44) == 0x44) { goto generic_io; } else if (s->cirrus_srcptr != s->cirrus_srcptr_end) { @@ -2443,6 +2444,7 @@ static void cirrus_update_memory_access(CirrusVGAState *s) unmap_linear_vram(s); } } + memory_region_transaction_commit(); } |